March 2014 - ffmpeg-user - lists.ffmpeg.org

FFMpeg release schedule
by Shyam Sundar 19 Mar '14

19 Mar '14

Hi, I was wondering if it is possible to know the release cycle of FFMpeg of next few months. I wanted to consume latest major release, i.e. 2.1, but it is already 5 months old. If another major release is going to come in near future, I can wait till then. Is it possible for you to share ? Thanks.

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ffprobe client-side?
by Eugene Gekhter 18 Mar '14

18 Mar '14

Hi, I'm wondering if it's possible to use ffprobe client-side in browser to determine whether a user upload is compatible with ffmpeg before having the user go through the hassle of uploading a file only to find out it's no good. Thanks, *Eugene Gekhter* / CEO and Owner "Quality is King" (847) 272-8207/ egekhter(a)pixcel.com *Pixcel* Office: (800) 557-3508 3336 Commercial Ave. / Northbrook, IL 60062 http://www.pixcel.com

3 4

fast trimming of short videos
by Gal Kahana 18 Mar '14

18 Mar '14

Hi, I am looking for a method to use ffmpeg for trimming little of the beginning and little of the end of videos. for mp4 files One can normally do this, to achieve trimming: ffmpeg -y -i myInput.mp4 -ss 4 -t 4 -c copy myOutput.mp4 However, i to trim about 2 frames or less than half a second. doing something like this: ffmpeg -y -i myInput.mp4 -ss 0.5 -t 0.5 -c copy myOutput.mp4 will trim more than half a second (at least from start) because 0.5 a second is less than the GOP of my vids. (normally it's about 1.4 GOP). so i have to re-encode. so the following works: ffmpeg -y -i myInput.mp4 -ss 0.5 -t 0.5 myOutput.mp4 note that copying is avoided. This takes time. i want to speed this up. figured i can do so be encoding only the edges using the folloing process: 1. use the segment muxer to generate segments, using segment_times with [1.5,totalvidduration-1.5]. This should create 3 parts - short start, long middle, short end 2. trim start while encoding on the beginning segment, trim end while encoding on the end segment 3. concat using the concat demuxer going through ts files. Implementing this i found that i need to correct the timestamps of the ts files to get an mp4 that works. the mp4 will work on my vlc, but not on my PC media player. i also try to run the trimmed converted parts (ts) via an hls player, to verify them, and there is some skipping [maybe that last bit is unimportant]. i'm wondering if you can see where the algorithm may be fault, or whether there are other methods that may prove to be better. i can think of many options where this can go wrong... like maybe concating encoded and not encoded parts ain't such a good idea. If my algoirhtm can be corrected by using specific ffmpeg options i'd like to know as well. Regards, Gal.

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Re: [FFmpeg-user] flags +ildct+ilme produce corrupted file
by Carl Eugen Hoyos 18 Mar '14

18 Mar '14

Massimo Battistel <battistel <at> gmail.com> writes: > 1. How to know the exact differencies between the 2 presets? Did you already try to reproduce your issue with the x264 binary? If it is reproducible with x264, you could ask on the x264 mailing list, if it is not reproducible with x264, there is probably a bug in FFmpeg which we will try to fix. > 2. Is there any relation between my issue and #993? ( > http://trac.ffmpeg.org/ticket/993) Only if you problem is not reproducible with -threads 1 Carl Eugen

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Need help splitting files
by Tim Hiles 18 Mar '14

18 Mar '14

Hello all, Whenever I split video files it creates output files with the correct duration (start and stop point). However, VLC plays them but there is about 10 seconds of black video at the beginning, ffplay AND windows Media Player plays them but when it gets to the end of the file you hear a stuttering sound that goes on infinitely. And when I try to convert the split files to an MP4 it fails immediately. 1st note: I tried this same ffmpeg command on a .mpg file and it plays fine. I put the ffprobe info at the bottom of the email in case it's useful. 2nd note: I tried the split command from a 64 bit version of ffmpeg "FFmpeg version: 2013-11-18 git-260fc0d" as well and got the same result below. FFMPEG OUTPUT from split command c:\ffmpeg\ffmpeg\bin\ffmpeg.exe -i FortWorth5-7WedAfternoon1.mp4 -ss 00:00:11 -to 00:49:24 -c copy "C:\Users\thiles \Videos\tandem\ARS captures\Fort Worth 5-7\FortWorth5-7WedAfternoon1_1.mp4" ffmpeg version N-51683-g9dc88ac Copyright (c) 2000-2013 the FFmpeg developers built on Apr 8 2013 21:19:21 with gcc 4.8.0 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfi g --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgsm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-li bopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheo ra --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib libavutil 52. 25.100 / 52. 25.100 libavcodec 55. 2.100 / 55. 2.100 libavformat 55. 1.100 / 55. 1.100 libavdevice 55. 0.100 / 55. 0.100 libavfilter 3. 49.101 / 3. 49.101 libswscale 2. 2.100 / 2. 2.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 2.100 / 52. 2.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'FortWorth5-7WedAfternoon1.mp4': Metadata: major_brand : mp42 minor_version : 0 compatible_brands: mp42isomavc1 creation_time : 2014-02-27 12:09:29 encoder : HandBrake 0.9.9 2013052900 Duration: 01:51:44.44, start: 0.000000, bitrate: 306 kb/s Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1024x768 [SAR 1:1 DAR 4:3], 139 kb/s, 30 fps, 60 tbr, 90k tbn, 180k tbc Metadata: creation_time : 2014-02-27 12:09:29 Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 159 kb/s Metadata: creation_time : 2014-02-27 12:09:29 Output #0, mp4, to 'C:\Users\thiles\Videos\tandem\ARS captures\Fort Worth 5-7\FortWorth5-7WedAfternoon1_1.mp4': Metadata: major_brand : mp42 minor_version : 0 compatible_brands: mp42isomavc1 encoder : Lavf55.1.100 Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1024x768 [SAR 1:1 DAR 4:3], q=2-31, 139 kb/s, 30 fp s, 90k tbn, 90k tbc Metadata: creation_time : 2014-02-27 12:09:29 Stream #0:1(eng): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, 159 kb/s Metadata: creation_time : 2014-02-27 12:09:29 Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #0:1 -> #0:1 (copy) Press [q] to stop, [?] for help frame=88329 fps=61166 q=-1.0 Lsize= 109486kB time=00:49:13.00 bitrate= 303.7kbits/s video:48226kB audio:57672kB subtitle:0 global headers:0kB muxing overhead 3.388943% FFPROBE output of the output file ffprobe version N-51683-g9dc88ac Copyright (c) 2007-2013 the FFmpeg developers built on Apr 8 2013 21:19:21 with gcc 4.8.0 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfi g --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgsm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-li bopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheo ra --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib libavutil 52. 25.100 / 52. 25.100 libavcodec 55. 2.100 / 55. 2.100 libavformat 55. 1.100 / 55. 1.100 libavdevice 55. 0.100 / 55. 0.100 libavfilter 3. 49.101 / 3. 49.101 libswscale 2. 2.100 / 2. 2.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 2.100 / 52. 2.100 [mov,mp4,m4a,3gp,3g2,mj2 @ 023bf8a0] max_analyze_duration 5000000 reached at 5015510 microseconds [mov,mp4,m4a,3gp,3g2,mj2 @ 023bf8a0] Could not find codec parameters for stream 0 (Video: h264 (avc1 / 0x31637661), 1024 x768, 134 kb/s): unspecified pixel format Consider increasing the value for the 'analyzeduration' and 'probesize' options Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\thiles\Videos\tandem\ARS captures\Fort Worth 5-7\FortWorth5-7WedA fternoon1_1.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf55.1.100 Duration: 00:49:13.00, start: 0.006009, bitrate: 303 kb/s Stream #0:0(und): Video: h264 (avc1 / 0x31637661), 1024x768, 134 kb/s, 30 fps, 90k tbr, 90k tbn, 180k tbc Metadata: handler_name : VideoHandler Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 159 kb/s Metadata: handler_name : SoundHandler OUTPUT WHEN CONVERTING TO MP4 c:\ffmpeg\ffmpeg\bin\ffmpeg.exe -i "C:\Users\thiles\ Videos\tandem\ARS captures\Fort Worth 5-7\FortWorth5-7WedAfternoon1_1.mp4" -loglevel error -stats -c:v libx264 -qscale:v 22 -async 1 -c:a aac -strict experimental "C:\Users\thiles\Videos\tandem\ARS captures\Fort Worth 5-7\FortWorth5-7 WedAfternoon1_1converted.mp4" [buffer @ 0417e420] Unable to parse option value "-1" as pixel format Error opening filters! FFPROBE OUTPUT OF .MPG FILE when using same command as above: c:\ffmpeg\ffmpeg\bin\ffmpeg.exe -i part_005.mpg -ss 00:00:11 -to 00:15:00 -c copy part_005_1.mpg ffmpeg version N-51683-g9dc88ac Copyright (c) 2000-2013 the FFmpeg developers built on Apr 8 2013 21:19:21 with gcc 4.8.0 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfi g --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgsm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-li bopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheo ra --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib libavutil 52. 25.100 / 52. 25.100 libavcodec 55. 2.100 / 55. 2.100 libavformat 55. 1.100 / 55. 1.100 libavdevice 55. 0.100 / 55. 0.100 libavfilter 3. 49.101 / 3. 49.101 libswscale 2. 2.100 / 2. 2.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 2.100 / 52. 2.100 [mpeg @ 003ab900] max_analyze_duration 5000000 reached at 5005000 microseconds Input #0, mpeg, from 'part_005.mpg': Duration: 00:15:43.41, start: 0.360000, bitrate: 2774 kb/s Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x480 [SAR 8:9 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59. 94 tbc Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, stereo, s16p, 128 kb/s Output #0, mpeg, to 'part_005_1.mpg': Metadata: encoder : Lavf55.1.100 Stream #0:0: Video: mpeg2video, yuv420p, 720x480 [SAR 8:9 DAR 4:3], q=2-31, 29.97 fps, 90k tbn, 29.97 tbc Stream #0:1: Audio: mp2, 44100 Hz, stereo, 128 kb/s Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #0:1 -> #0:1 (copy) Press [q] to stop, [?] for help frame=26644 fps=11732 q=-1.0 Lsize= 298570kB time=00:14:49.03 bitrate=2751.2kbits/s video:283166kB audio:13859kB subtitle:0 global headers:0kB muxing overhead 0.520312% Thanks in advance for any help. I'm not a novice at ffmpeg, but I'm far from an expert so please pardon my ignorance if I don't understand your answer at first. Tim

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DASH?
by Andrew Sinclair 17 Mar '14

17 Mar '14

Hi, Is it possible at present to use ffmpeg to encode and playback MPEG-DASH packaged content? >ffmpeg -protocols ffmpeg version N-61165-g742d860 Copyright (c) 2000-2014 the FFmpeg developers built on Mar 8 2014 16:22:59 with llvm-gcc 4.2.1 (LLVM build 2336.11.00) configuration: --prefix=/usr/local --enable-gpl --enable-nonfree --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-libvidstab --enable-libx265 libavutil 52. 66.101 / 52. 66.101 libavcodec 55. 52.102 / 55. 52.102 libavformat 55. 33.101 / 55. 33.101 libavdevice 55. 11.100 / 55. 11.100 libavfilter 4. 3.100 / 4. 3.100 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 18.100 / 0. 18.100 libpostproc 52. 3.100 / 52. 3.100 Supported file protocols: Input: cache concat crypto data ffrtmphttp file ftp gopher hls http httpproxy mmsh mmst pipe rtmp rtmpt rtp srtp tcp udp unix Output: ffrtmphttp file ftp gopher http httpproxy md5 pipe rtmp rtmpt rtp srtp tcp udp unix >$ ffmpeg -formats ffmpeg version N-61165-g742d860 Copyright (c) 2000-2014 the FFmpeg developers built on Mar 8 2014 16:22:59 with llvm-gcc 4.2.1 (LLVM build 2336.11.00) configuration: --prefix=/usr/local --enable-gpl --enable-nonfree --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-libvidstab --enable-libx265 libavutil 52. 66.101 / 52. 66.101 libavcodec 55. 52.102 / 55. 52.102 libavformat 55. 33.101 / 55. 33.101 libavdevice 55. 11.100 / 55. 11.100 libavfilter 4. 3.100 / 4. 3.100 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 18.100 / 0. 18.100 libpostproc 52. 3.100 / 52. 3.100 File formats: D. = Demuxing supported .E = Muxing supported -- E 3g2 3GP2 (3GPP2 file format) E 3gp 3GP (3GPP file format) D 4xm 4X Technologies E a64 a64 - video for Commodore 64 D aac raw ADTS AAC (Advanced Audio Coding) DE ac3 raw AC-3 D act ACT Voice file format D adf Artworx Data Format D adp ADP E adts ADTS AAC (Advanced Audio Coding) DE adx CRI ADX D aea MD STUDIO audio D afc AFC DE aiff Audio IFF DE alaw PCM A-law DE amr 3GPP AMR D anm Deluxe Paint Animation D apc CRYO APC D ape Monkey's Audio D aqtitle AQTitle subtitles DE asf ASF (Advanced / Active Streaming Format) E asf_stream ASF (Advanced / Active Streaming Format) DE ass SSA (SubStation Alpha) subtitle DE ast AST (Audio Stream) DE au Sun AU DE avi AVI (Audio Video Interleaved) E avm2 SWF (ShockWave Flash) (AVM2) D avr AVR (Audio Visual Research) D avs AVS D bethsoftvid Bethesda Softworks VID D bfi Brute Force & Ignorance D bin Binary text D bink Bink DE bit G.729 BIT file format D bmv Discworld II BMV D boa Black Ops Audio D brstm BRSTM (Binary Revolution Stream) D c93 Interplay C93 DE caf Apple CAF (Core Audio Format) DE cavsvideo raw Chinese AVS (Audio Video Standard) video D cdg CD Graphics D cdxl Commodore CDXL video D concat Virtual concatenation script E crc CRC testing DE data raw data DE daud D-Cinema audio D dfa Chronomaster DFA DE dirac raw Dirac DE dnxhd raw DNxHD (SMPTE VC-3) D dsicin Delphine Software International CIN DE dts raw DTS D dtshd raw DTS-HD DE dv DV (Digital Video) E dvd MPEG-2 PS (DVD VOB) D dxa DXA D ea Electronic Arts Multimedia D ea_cdata Electronic Arts cdata DE eac3 raw E-AC-3 D epaf Ensoniq Paris Audio File DE f32be PCM 32-bit floating-point big-endian DE f32le PCM 32-bit floating-point little-endian E f4v F4V Adobe Flash Video DE f64be PCM 64-bit floating-point big-endian DE f64le PCM 64-bit floating-point little-endian DE ffm FFM (FFserver live feed) DE ffmetadata FFmpeg metadata in text D film_cpk Sega FILM / CPK DE filmstrip Adobe Filmstrip DE flac raw FLAC D flic FLI/FLC/FLX animation DE flv FLV (Flash Video) E framecrc framecrc testing E framemd5 Per-frame MD5 testing D frm Megalux Frame DE g722 raw G.722 DE g723_1 raw G.723.1 D g729 G.729 raw format demuxer DE gif GIF Animation D gsm raw GSM DE gxf GXF (General eXchange Format) DE h261 raw H.261 DE h263 raw H.263 DE h264 raw H.264 video E hds HDS Muxer DE hevc raw HEVC video E hls Apple HTTP Live Streaming D hls,applehttp Apple HTTP Live Streaming D hnm Cryo HNM v4 DE ico Microsoft Windows ICO D idcin id Cinematic D idf iCE Draw File D iff IFF (Interchange File Format) DE ilbc iLBC storage DE image2 image2 sequence DE image2pipe piped image2 sequence D ingenient raw Ingenient MJPEG D ipmovie Interplay MVE E ipod iPod H.264 MP4 (MPEG-4 Part 14) DE ircam Berkeley/IRCAM/CARL Sound Format E ismv ISMV/ISMA (Smooth Streaming) D iss Funcom ISS D iv8 IndigoVision 8000 video DE ivf On2 IVF DE jacosub JACOsub subtitle format D jv Bitmap Brothers JV DE latm LOAS/LATM D lavfi Libavfilter virtual input device D lmlm4 raw lmlm4 D loas LOAS AudioSyncStream D lvf LVF D lxf VR native stream (LXF) DE m4v raw MPEG-4 video E matroska Matroska D matroska,webm Matroska / WebM E md5 MD5 testing D mgsts Metal Gear Solid: The Twin Snakes DE microdvd MicroDVD subtitle format DE mjpeg raw MJPEG video E mkvtimestamp_v2 extract pts as timecode v2 format, as defined by mkvtoolnix DE mlp raw MLP D mm American Laser Games MM DE mmf Yamaha SMAF E mov QuickTime / MOV D mov,mp4,m4a,3gp,3g2,mj2 QuickTime / MOV E mp2 MP2 (MPEG audio layer 2) DE mp3 MP3 (MPEG audio layer 3) E mp4 MP4 (MPEG-4 Part 14) D mpc Musepack D mpc8 Musepack SV8 DE mpeg MPEG-1 Systems / MPEG program stream E mpeg1video raw MPEG-1 video E mpeg2video raw MPEG-2 video DE mpegts MPEG-TS (MPEG-2 Transport Stream) D mpegtsraw raw MPEG-TS (MPEG-2 Transport Stream) D mpegvideo raw MPEG video E mpjpeg MIME multipart JPEG D mpl2 MPL2 subtitles D mpsub MPlayer subtitles D msnwctcp MSN TCP Webcam stream D mtv MTV DE mulaw PCM mu-law D mv Silicon Graphics Movie D mvi Motion Pixels MVI DE mxf MXF (Material eXchange Format) E mxf_d10 MXF (Material eXchange Format) D-10 Mapping D mxg MxPEG clip D nc NC camera feed D nistsphere NIST SPeech HEader REsources D nsv Nullsoft Streaming Video E null raw null video DE nut NUT D nuv NuppelVideo DE ogg Ogg DE oma Sony OpenMG audio E opus Opus D paf Amazing Studio Packed Animation File D pjs PJS (Phoenix Japanimation Society) subtitles D pmp Playstation Portable PMP E psp PSP MP4 (MPEG-4 Part 14) D psxstr Sony Playstation STR D pva TechnoTrend PVA D pvf PVF (Portable Voice Format) D qcp QCP D r3d REDCODE R3D DE rawvideo raw video D realtext RealText subtitle format D redspark RedSpark D rl2 RL2 DE rm RealMedia DE roq raw id RoQ D rpl RPL / ARMovie D rsd GameCube RSD DE rso Lego Mindstorms RSO DE rtp RTP output DE rtsp RTSP output DE s16be PCM signed 16-bit big-endian DE s16le PCM signed 16-bit little-endian DE s24be PCM signed 24-bit big-endian DE s24le PCM signed 24-bit little-endian DE s32be PCM signed 32-bit big-endian DE s32le PCM signed 32-bit little-endian DE s8 PCM signed 8-bit D sami SAMI subtitle format DE sap SAP output D sbg SBaGen binaural beats script E sdl SDL output device D sdp SDP D sdr2 SDR2 E segment segment D shn raw Shorten D siff Beam Software SIFF DE smjpeg Loki SDL MJPEG D smk Smacker E smoothstreaming Smooth Streaming Muxer D smush LucasArts Smush D sol Sierra SOL DE sox SoX native DE spdif IEC 61937 (used on S/PDIF - IEC958) E speex Speex DE srt SubRip subtitle E stream_segment,ssegment streaming segment muxer D subviewer SubViewer subtitle format D subviewer1 SubViewer v1 subtitle format E svcd MPEG-2 PS (SVCD) DE swf SWF (ShockWave Flash) D tak raw TAK D tedcaptions TED Talks captions E tee Multiple muxer tee D thp THP D tiertexseq Tiertex Limited SEQ D tmv 8088flex TMV DE truehd raw TrueHD D tta TTA (True Audio) D tty Tele-typewriter D txd Renderware TeXture Dictionary DE u16be PCM unsigned 16-bit big-endian DE u16le PCM unsigned 16-bit little-endian DE u24be PCM unsigned 24-bit big-endian DE u24le PCM unsigned 24-bit little-endian DE u32be PCM unsigned 32-bit big-endian DE u32le PCM unsigned 32-bit little-endian DE u8 PCM unsigned 8-bit E uncodedframecrc uncoded framecrc testing DE vc1 raw VC-1 video DE vc1test VC-1 test bitstream E vcd MPEG-1 Systems / MPEG program stream (VCD) D vivo Vivo D vmd Sierra VMD E vob MPEG-2 PS (VOB) D vobsub VobSub subtitle format DE voc Creative Voice D vplayer VPlayer subtitles D vqf Nippon Telegraph and Telephone Corporation (NTT) TwinVQ DE w64 Sony Wave64 DE wav WAV / WAVE (Waveform Audio) D wc3movie Wing Commander III movie E webm WebM DE webvtt WebVTT subtitle D wsaud Westwood Studios audio D wsvqa Westwood Studios VQA DE wtv Windows Television (WTV) DE wv raw WavPack D xa Maxis XA D xbin eXtended BINary text (XBIN) D xmv Microsoft XMV D xwma Microsoft xWMA D yop Psygnosis YOP DE yuv4mpegpipe YUV4MPEG pipe

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Real Time Transcoding
by karthik＠cytrion.com 17 Mar '14

17 Mar '14

Hi , I am mixing 2 audio streams and transcoding to mp3 stream . I am able to get the output in real time initially but with time the output is being delayed and is not in real time . My command is ffmpeg -probesize 2048 -analyzeduration 1 -i http://xx.yy.zz/stream1.mp3 -i rtmp;//xx.yy.zz/stream2.flv amix -filter_complex amix=inputs=2:duration=first -ca libmp3lame -ab 128k -ar 44100 -f mp3 - > | named pipe . Is there any other input parameter that should be added to get the real time output always ? -- -- Karthik Babu

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Fwd: Not able to extract the metadata
by Seema Singh 17 Mar '14

17 Mar '14

Hi All, Any help/input for below problem?? Regards, Seema. ------- Original Message ------- Sender : Seema Singh<seema.singh(a)samsung.com> Lead Engineer/SRI-Bangalore-TZN/Samsung Electronics Date : Mar 12, 2014 14:58 (GMT+09:00) Title : Not able to extract the metadata Hi All, I am new to ffmpeg , started off with very basics things . Like check the Metadata of a video file. But facing the below error . Command used : fmpeg -i ../TestFiles/Mimic__H264_15fps_D1.MP4 -f ffmetadata metadata.txt Command output: ___________________________________________________________________________ ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers built on Mar 5 2014 12:38:54 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5) configuration: --prefix=/home/seema.s/ffmpeg_build --extra-cflags=-I/home/seema.s/ffmpeg_build/include --extra-ldflags=-L/home/seema.s/ffmpeg_build/lib --bindir=/home/seema.s/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab libavutil 52. 66.101 / 52. 66.101 libavcodec 55. 52.102 / 55. 52.102 libavformat 55. 33.101 / 55. 33.101 libavdevice 55. 11.100 / 55. 11.100 libavfilter 4. 2.100 / 4. 2.100 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 18.100 / 0. 18.100 libpostproc 52. 3.100 / 52. 3.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '../TestFiles/Mimic__H264_15fps_D1.MP4': Metadata: major_brand : mp42 minor_version : 1 compatible_brands: isomiso2avc1mp41mp423gp5 creation_time : 2010-04-28 10:39:08 title : Mimic_mp4-92_amr-12.3gp.MP4.MP4 artist : created with SUPER(C).v2010.bld.37 encoder : eRightSoft comment : 16:09:25 Duration: 00:00:40.07, start: 0.000000, bitrate: 1249 kb/s Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 720x480 [SAR 1:1 DAR 3:2], 1248 kb/s, 15 fps, 15 tbr, 15 tbn, 30 tbc (default) Metadata: creation_time : 2010-04-28 10:39:08 handler_name : VideoHandler Stream #0:1(und): Data: none (mp4s / 0x7334706D), 0 kb/s (default) Metadata: creation_time : 2010-04-27 10:39:21 handler_name : GPAC MPEG-4 OD Handler Stream #0:2(und): Data: none (mp4s / 0x7334706D), 0 kb/s (default) Metadata: creation_time : 2010-04-27 10:39:21 handler_name : GPAC MPEG-4 BIFS Handler File 'metadata.txt' already exists. Overwrite ? [y/N] y Output #0, ffmetadata, to 'metadata.txt': Metadata: major_brand : mp42 minor_version : 1 compatible_brands: isomiso2avc1mp41mp423gp5 comment : 16:09:25 title : Mimic_mp4-92_amr-12.3gp.MP4.MP4 artist : created with SUPER(C).v2010.bld.37 Stream mapping: Press [q] to stop, [?] for help size= 0kB time=-577014:-32:-22.-77 bitrate=N/A video:0kB audio:0kB subtitle:0 data:0 global headers:0kB muxing overhead 0.000000% Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used) _____________________________________________________________________________________________ Have I missed something here? Please let me know. Regards, Seema.

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Re: [FFmpeg-user] Fwd: Not able to extract the metadata
by Seema Singh 17 Mar '14

17 Mar '14

Hi Francois , Thanks for your explanation!! Indeed its helpful. Regards, Seema. ------- Original Message ------- Sender : Francois Visagie<francois.visagie(a)gmail.com> Date : Mar 15, 2014 20:04 (GMT+09:00) Title : Re: [FFmpeg-user] Fwd: Not able to extract the metadata > -----Original Message----- > From: ffmpeg-user-bounces(a)ffmpeg.org [mailto:ffmpeg-user- > bounces(a)ffmpeg.org] On Behalf Of Seema Singh > Sent: 14 March 2014 07:26 > To: ffmpeg-user(a)ffmpeg.org > Subject: [FFmpeg-user] Fwd: Not able to extract the metadata > > Hi All, > > Any help/input for below problem?? > > Regards, > Seema. > > ------- Original Message ------- > Sender : Seema Singh<seema.singh(a)samsung.com> Lead Engineer/SRI- > Bangalore-TZN/Samsung Electronics > Date : Mar 12, 2014 14:58 (GMT+09:00) > Title : Not able to extract the metadata > > Hi All, > > I am new to ffmpeg , started off with very basics things . > Like check the Metadata of a video file. > But facing the below error . > > Command used : > > fmpeg -i ../TestFiles/Mimic__H264_15fps_D1.MP4 -f ffmetadata > metadata.txt > > > Command output: > __________________________________________________________ > _________________ > ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers > built on Mar 5 2014 12:38:54 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5) > configuration: --prefix=/home/seema.s/ffmpeg_build --extra-cflags=- > I/home/seema.s/ffmpeg_build/include --extra-ldflags=- > L/home/seema.s/ffmpeg_build/lib --bindir=/home/seema.s/bin --extra- > libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame > --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx -- > enable-libx264 --enable-nonfree --enable-x11grab > libavutil 52. 66.101 / 52. 66.101 > libavcodec 55. 52.102 / 55. 52.102 > libavformat 55. 33.101 / 55. 33.101 > libavdevice 55. 11.100 / 55. 11.100 > libavfilter 4. 2.100 / 4. 2.100 > libswscale 2. 5.101 / 2. 5.101 > libswresample 0. 18.100 / 0. 18.100 > libpostproc 52. 3.100 / 52. 3.100 > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from > '../TestFiles/Mimic__H264_15fps_D1.MP4': > Metadata: > major_brand : mp42 > minor_version : 1 > compatible_brands: isomiso2avc1mp41mp423gp5 > creation_time : 2010-04-28 10:39:08 > title : Mimic_mp4-92_amr-12.3gp.MP4.MP4 > artist : created with SUPER(C).v2010.bld.37 > encoder : eRightSoft > comment : 16:09:25 > Duration: 00:00:40.07, start: 0.000000, bitrate: 1249 kb/s > Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), > yuv420p, 720x480 [SAR 1:1 DAR 3:2], 1248 kb/s, 15 fps, 15 tbr, 15 tbn, 30 tbc > (default) > Metadata: > creation_time : 2010-04-28 10:39:08 > handler_name : VideoHandler > Stream #0:1(und): Data: none (mp4s / 0x7334706D), 0 kb/s (default) > Metadata: > creation_time : 2010-04-27 10:39:21 > handler_name : GPAC MPEG-4 OD Handler > Stream #0:2(und): Data: none (mp4s / 0x7334706D), 0 kb/s (default) > Metadata: > creation_time : 2010-04-27 10:39:21 > handler_name : GPAC MPEG-4 BIFS Handler > File 'metadata.txt' already exists. Overwrite ? [y/N] y Output #0, ffmetadata, > to 'metadata.txt': > Metadata: > major_brand : mp42 > minor_version : 1 > compatible_brands: isomiso2avc1mp41mp423gp5 > comment : 16:09:25 > title : Mimic_mp4-92_amr-12.3gp.MP4.MP4 > artist : created with SUPER(C).v2010.bld.37 > Stream mapping: > Press [q] to stop, [?] for help > size= 0kB time=-577014:-32:-22.-77 bitrate=N/A > video:0kB audio:0kB subtitle:0 data:0 global headers:0kB muxing overhead > 0.000000% Output file is empty, nothing was encoded (check -ss / -t / - > frames parameters if used) > __________________________________________________________ > ___________________________________ > > > Have I missed something here? Please let me know. As mentioned in previous replies, ffmpeg's output file is only used for AV content, not for metadata. Metadata is written to the console as you can see in your output above. If you want that in a file, use output redirection. The "error message" at the end that seems to bother you is caused by the fact that your command line specifies no AV encoding to occur. This means ffmpeg never needed to write to the (AV, remember) output file. Hope this helps. > > Regards, > Seema.   > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user(a)ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user _______________________________________________ ffmpeg-user mailing list ffmpeg-user(a)ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user

1 0

concatenate png files for different durations?
by Spencer Graves 16 Mar '14

16 Mar '14

How can I display a sequence of png files for different time durations and mate them with a single audio? Attached is a toy example: I want to display tst1.png for 0.5 seconds followed by tst2.png for 1.5 seconds and merge that video with the audio in tst2.mp2. If I don't care about the display time for each image, I can merge these 2 png and 1 mp2 files with "ffmpeg -y -r 1 -i tst.mp2 -r 2 -i tst%d.png -b 300k tst.mp4". The documentation describes "concat" for filter, demuxer, protocol, and raw. I was unable to see how any of these would solve this problem. Thanks, Spencer p.s. I'm using ffmpeg version N-61163-gd1122b7 Copyright (c) 2000-2014 the FFmpeg developers built on Mar 7 2014 22:01:29 with gcc 4.8.2 (GCC) under Windows 7 Home Edition with a dual core Intel processor, 8 GB RAM, and lots of free hard drive.

4 6

matlab variable in ffmpeg
by balouchrasheed 16 Mar '14

16 Mar '14

Dear all i want to insert a loop of video in ffmpeg command by using matlab so i am getting error that No such file or directory please help how to insert matlab variable in ffmpeg command thanks -- View this message in context: http://ffmpeg-users.933282.n4.nabble.com/matlab-variable-in-ffmpeg-tp466421… Sent from the FFmpeg-users mailing list archive at Nabble.com.

2 3

smpte 429-5
by Brian Quandt 16 Mar '14

16 Mar '14

Is there smpte subtitle support (encoding) in ffmpeg? Or anyone working on it? Looks rather straight forward XML type format. Be a great way to convert existing subtitles to one which would be useful for DCP/MXF generation. Given time I might try to add this myself, but prefer to be working on fixing other bugs if someone has already done it.

1 0

stereo downmix error aac HEv2
by Sean Darcy 15 Mar '14

15 Mar '14

stripping audio from a VOB , I was trying to reencode to a lower bitrate, and downmix to mono. git March 13. This worked fine: ffmpeg -i /mnt/dvd/VIDEO_TS/VTS_01_1.VOB -vn -c:a libfdk_aac -b:a 48k -ac 1 1-Talk-show-ac1-48testk.m4a and I can use HEv2 if I don't downmix: ffmpeg -i /mnt/dvd/VIDEO_TS/VTS_01_1.VOB -vn -c:a libfdk_aac -profile:a aac_he_v2 -b:a 48k 1-Talk-he-ac2-48testk.m4a But: ffmpeg -i /mnt/dvd/VIDEO_TS/VTS_01_1.VOB -vn -c:a libfdk_aac -profile:a aac_he_v2 -b:a 48k -ac 1 1-Talk-he-ac1-48testk.m4a ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers built on Mar 13 2014 15:33:24 with gcc 4.8.2 (GCC) 20131212 (Red Hat 4.8.2-7) configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --shlibdir=/usr/lib64 --extra-cflags='-Ofast -march=native -mtune=native -fopenmp -fomit-frame-pointer -pipe' --enable-avresample --enable-static --enable-shared --enable-gray --enable-gpl --enable-nonfree --enable-version3 --enable-postproc --enable-avfilter --enable-avresample --enable-pthreads --enable-x11grab --enable-gray --enable-vaapi --enable-hardcoded-tables --enable-libaacplus --enable-avisynth --enable-frei0r --enable-libfdk-aac --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-zlib --disable-debug --cpu=amdfam10 --arch=x86_64 --enable-pic --enable-libopencv --enable-openssl libavutil 52. 66.101 / 52. 66.101 libavcodec 55. 52.102 / 55. 52.102 libavformat 55. 34.101 / 55. 34.101 libavdevice 55. 11.100 / 55. 11.100 libavfilter 4. 3.100 / 4. 3.100 libavresample 1. 2. 0 / 1. 2. 0 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 18.100 / 0. 18.100 libpostproc 52. 3.100 / 52. 3.100 Input #0, mpeg, from '/mnt/dvd/VIDEO_TS/VTS_01_1.VOB': Duration: 00:07:22.24, start: 0.280633, bitrate: 19421 kb/s Stream #0:0[0x1bf]: Data: dvd_nav_packet Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x480 [SAR 8:9 DAR 4:3], max. 3000 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s [libfdk_aac @ 0x12b3300] Unable to initialize the encoder: SBR library initialization error Output #0, ipod, to '1-Talk-he-ac1-48testk.m4a': Stream #0:0: Audio: aac (HE-AACv2), 48000 Hz, mono, s16, 48 kb/s Stream mapping: Stream #0:2 -> #0:0 (ac3 -> libfdk_aac) Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height Thanks for any help. sean

2 5

ipod message when stripping audio ??
by Sean Darcy 14 Mar '14

14 Mar '14

Using recent git, I'm stripping audio out of a vob. I get an odd message: > [ipod @ 0x18b47e0] track 0: codec frame size is not set Everything seems to work, but what's the ipod message about? sean > ffmpeg -i /mnt/dvd/VIDEO_TS/VTS_01_1.VOB -vn -c:a copy 1-My-Talk.m4a > ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers > built on Mar 13 2014 15:33:24 with gcc 4.8.2 (GCC) 20131212 (Red Hat 4.8.2-7) > configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --shlibdir=/usr/lib64 --extra-cflags='-Ofast -march=native -mtune=native -fopenmp -fomit-frame-pointer -pipe' --enable-avresample --enable-static --enable-shared --enable-gray --enable-gpl --enable-nonfree --enable-version3 --enable-postproc --enable-avfilter --enable-avresample --enable-pthreads --enable-x11grab --enable-gray --enable-vaapi --enable-hardcoded-tables --enable-libaacplus --enable-avisynth --enable-frei0r --enable-libfdk-aac --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvo-aacenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-zlib --disable-debug --cpu=amdfam10 --arch=x86_64 --enable-pic --enable-libopencv --enable-openssl > libavutil 52. 66.101 / 52. 66.101 > libavcodec 55. 52.102 / 55. 52.102 > libavformat 55. 34.101 / 55. 34.101 > libavdevice 55. 11.100 / 55. 11.100 > libavfilter 4. 3.100 / 4. 3.100 > libavresample 1. 2. 0 / 1. 2. 0 > libswscale 2. 5.101 / 2. 5.101 > libswresample 0. 18.100 / 0. 18.100 > libpostproc 52. 3.100 / 52. 3.100 > Input #0, mpeg, from '/mnt/dvd/VIDEO_TS/VTS_01_1.VOB': > Duration: 00:07:22.24, start: 0.280633, bitrate: 19421 kb/s > Stream #0:0[0x1bf]: Data: dvd_nav_packet > Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x480 [SAR 8:9 DAR 4:3], max. 3000 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc > Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s > [ipod @ 0x18b47e0] track 0: codec frame size is not set > Output #0, ipod, to '1-Old-Testament.m4a': > Metadata: > encoder : Lavf55.34.101 > Stream #0:0: Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, stereo, 192 kb/s > Stream mapping: > Stream #0:2 -> #0:0 (copy) > Press [q] to stop, [?] for help > size= 57750kB time=00:40:51.07 bitrate= 193.0kbits/s > video:0kB audio:57450kB subtitle:0 data:0 global headers:0kB muxing overhead 0.522630%

1 0

HLS Demuxing Live content from first segment
by Jamie Stackhouse 14 Mar '14

14 Mar '14

Hello! I'm attempting to use FFmpeg to demux an HLS input into jpegs using image2. We have a livestream that is using a sliding window, served from Akamai normally, however I've pulled the required files onto my local machine for testing purposes. I'm hoping we are able to tell ffmpeg to connect to the variant playlist, and start generating images from the first segment in a playlist file, whereas currently, it starts from the last segment, as the playlist is still considered live. I assume the solution will involve seeking. Command I tried (Simulated time is a patch we are creating/using to name the files based upon unix timestamp) ffmpeg -ss 0:00:00 -i http://localhost:8888/master.m3u8 -ss 0:00:00 -f image2 -vsync 0 -simtime 1394809200 -y images/%d_%02d.jpg Command + Output http://pastebin.com/jSZJEZ8R Behaviour In the output, I see a could not seek error, and it begins generating frames from the current live segment. Thanks for any help, Jamie

1 0

Security Error 2123 reading bitmapdata
by George Boney 14 Mar '14

14 Mar '14

Hello, I have an ActionScript Application that connects to FFSERVER (run by a different entity) to display an FLV stream. When my application issues a “bitmapData.draw” in ActionScript, it returns an error “SecurityError: Error #2122” or “SecurityError: Error 2123”. These errors are Adobe Sandbox errors. ActionScript default security does not allow you to access the bitmap data just because you can access the stream. It is not completely clear from the documentation, but I think it occurs because my swf file is loaded from a different domain than the video stream. According to Adobe documentation, this error can be resolved by either: a) a crossdomain.xml file from the same URL as the video stream, or b) the publisher setting “videoSampleAccess” in the stream. (see http://help.adobe.com/en_US/FlashMediaServer/3.5_SS_ASD/WS5b3ccc516d4fbf351… ) The people that administer the FFSERVER are willing to work with me on this issue, but after a month or two of searching, we still don’t know how to implement either of these solutions. I suspect solution (b) is the best method, but I would expect there to be some parameter we set in the <stream> configuration to enable videoSampleAccess (either directly or through Metadata), and we were unable to find one. There are some comments on the web that discuss the publisher setting “RTSPSampleAccess, True, True”, but this is an FLV stream so I don’t think that would apply in this casel. Any suggestions would be helpful. I was going to look at the source for configuring a FLV stream and just see if there were any undocumented parameters, but I am not that familiar with the FFSERVER source and have not had the time. Thanks, George

1 0

ffserver current status to feed the next audio
by Maxim Novikov 14 Mar '14

14 Mar '14

I am trying to make ffserver work to stream audio to run an internet radio station. So far the streaming itself works, I can stream and feed audio files to ffserver running ffmpeg. What I cannot figure out is how I could get some status information about how much data is left in the current buffer that ffserver is going to play, so I would know when exactly to supply the next track at the right time. ffserver's stat page is not much of help, unfortunately, otherwise I could have monitored and parsed it at least to get what I need. If you cannot get that kind of information, streaming with ffserver gets kind of useless, as you have no idea whether it is still playing something, failed for some reason or anything else happened, and as a result you do not know when to feed next data (and you may either overload the buffer, or have huge pauses in your stream). Can you please help me out here and answer whether it is possible to get that info I need from ffserver somehow, and if yes, then how?

1 0

Camera's pts and dts jumps issue
by tilzaer 14 Mar '14

14 Mar '14

I use ffmpeg library in my code for capturing rtsp streams from cameras and writing in flv. If I capture streams from only one camera and camera has only video stream then there's no any errors, I got first packet with pts and dts 1698557894 and other packets' pts and dts slowly increases. But if camera has video and audio streams, then strange things occur. For example, video packets pts and dts begin with 1698557894 and slowly increase, and audio starts with 0 then slowly increases and after ~50 packets jumps to value 151004317 and slowly increase. Another situation, when audio begins with 0 and slowly increases, and video begins from 1785662594 and after ~70 packets jumps to 234722 and slowly increase. Such behaviour do not allow flv segment muxer to write files, it just returns some EINVAL value. Also if I try to capture streams from two cameras, first camera has only video and another has video and audio, then first camera packets' pts and dts are ok. But another camera has video and audio pts/dts values which are very different. av_read_frame returns video packet with pts/dts value 1811924055, which rescales to 557003451 in flv muxer and audio 4456027604, which rescales to 557003451, but these values must be almost equal! So, the questions are: 0) why do these jumps occur in the beginning of capturing? is it a problem with camera or it is just some ffmpeg issue? 1) can such jump occur after some long period? how I should handle it? 2) why camera's video and audio have so different pts/dts values? -- View this message in context: http://ffmpeg-users.933282.n4.nabble.com/Camera-s-pts-and-dts-jumps-issue-t… Sent from the FFmpeg-users mailing list archive at Nabble.com.

1 0

fixed point decoder
by Diaz Soho 14 Mar '14

14 Mar '14

Hi All, is it possible to use fixed-point for aac decoder in libav? Any input was appreciated !!!!

1 0

ffmpeg synchronization
by Spencer Graves 14 Mar '14

14 Mar '14

Hello: How can I force the video and audio to start together? I have a 1 minute mp2 audio file that I want to match with 15 png files, giving 4 seconds to each image. Below please find what I tried. The resulting video skips the first png file entirely and displays the second png image for 16 seconds before starting the third image. Suggestions? Thanks, Spencer >ffmpeg -y -r 1 -i restrictSecrecy2014-03-07c.mp2 -r 0.25 -i restrictSecrecy%d.png -b:v 300k -pix_fmt yuv420p restrictSecrecy.mp4 ffmpeg version N-61163-gd1122b7 Copyright (c) 2000-2014 the FFmpeg developers built on Mar 7 2014 22:01:29 with gcc 4.8.2 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp ack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable -zlib libavutil 52. 66.101 / 52. 66.101 libavcodec 55. 52.102 / 55. 52.102 libavformat 55. 33.101 / 55. 33.101 libavdevice 55. 11.100 / 55. 11.100 libavfilter 4. 3.100 / 4. 3.100 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 18.100 / 0. 18.100 libpostproc 52. 3.100 / 52. 3.100 [mp3 @ 04655400] Estimating duration from bitrate, this may be inaccurate Input #0, mp3, from 'restrictSecrecy2014-03-07c.mp2': Metadata: album : Restrict secrecy more than data colleciton title : audio track : 1 artist : Spencer Graves genre : audio date : 2014 Duration: 00:01:00.29, start: 0.000000, bitrate: 159 kb/s Stream #0:0: Audio: mp2, 44100 Hz, stereo, s16p, 159 kb/s Input #1, image2, from 'restrictSecrecy%d.png': Duration: 00:00:00.60, start: 0.000000, bitrate: N/A Stream #1:0: Video: png, rgba, 1058x794 [SAR 3780:3780 DAR 529:397], 25 fps, 25 tbr, 25 tbn, 25 tbc [libx264 @ 047147c0] using SAR=1/1 [libx264 @ 047147c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 [libx264 @ 047147c0] profile High, level 3.1 [libx264 @ 047147c0] 264 - core 142 r2389 956c8d8 - H.264/MPEG-4 AVC codec - Cop yleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deb lock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 m e_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chro ma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 i nterlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=1 scenecu t=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=300 ratetol=1.0 qco mp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 Output #0, mp4, to 'restrictSecrecy.mp4': Metadata: album : Restrict secrecy more than data colleciton title : audio track : 1 artist : Spencer Graves genre : audio date : 2014 encoder : Lavf55.33.101 Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1058x7 94 [SAR 1:1 DAR 529:397], q=-1--1, 300 kb/s, 16384 tbn, 0.25 tbc Stream #0:1: Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 44100 Hz, s tereo, s16, 128 kb/s Stream mapping: Stream #1:0 -> #0:0 (png -> libx264) Stream #0:0 -> #0:1 (mp2 -> libvo_aacenc) Press [q] to stop, [?] for help frame= 15 fps=0.0 q=0.0 size= 0kB time=00:00:05.07 bitrate= 0.1kbits/s frame= 15 fps= 15 q=0.0 size= 256kB time=00:00:26.34 bitrate= 79.6kbits/s frame= 15 fps= 10 q=0.0 size= 589kB time=00:00:47.63 bitrate= 101.3kbits/s frame= 15 fps=5.6 q=-1.0 Lsize= 3218kB time=00:01:00.01 bitrate= 439.3kbits /s video:2268kB audio:938kB subtitle:0 data:0 global headers:0kB muxing overhead 0. 365568% [libx264 @ 047147c0] frame I:3 Avg QP: 1.25 size:173903 [libx264 @ 047147c0] frame P:11 Avg QP: 3.89 size:162066 [libx264 @ 047147c0] frame B:1 Avg QP: 3.48 size: 17350 [libx264 @ 047147c0] consecutive B-frames: 86.7% 13.3% 0.0% 0.0% [libx264 @ 047147c0] mb I I16..4: 67.4% 1.2% 31.4% [libx264 @ 047147c0] mb P I16..4: 12.4% 6.3% 26.6% P16..4: 3.7% 1.0% 1.0% 0.0% 0.0% skip:49.2% [libx264 @ 047147c0] mb B I16..4: 0.1% 0.1% 1.5% B16..8: 3.7% 0.4% 0.8% direct: 0.9% skip:92.6% L0:60.8% L1:35.8% BI: 3.4% [libx264 @ 047147c0] final ratefactor: 8.13 [libx264 @ 047147c0] 8x8 transform intra:9.1% inter:9.4% [libx264 @ 047147c0] coded y,uvDC,uvAC intra: 47.6% 48.8% 48.8% inter: 3.4% 5.9% 5.9% [libx264 @ 047147c0] i16 v,h,dc,p: 87% 6% 4% 2% [libx264 @ 047147c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 21% 22% 3% 4% 4% 4% 4% 6% [libx264 @ 047147c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 21% 14% 5% 6% 6% 6% 5% 6% [libx264 @ 047147c0] i8c dc,h,v,p: 70% 11% 15% 5% [libx264 @ 047147c0] Weighted P-Frames: Y:0.0% UV:0.0% [libx264 @ 047147c0] ref P L0: 46.9% 5.2% 41.1% 6.8% [libx264 @ 047147c0] kb/s:309.57

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ffmpeg Decklink output on Windows
by Anusha Balan 13 Mar '14

13 Mar '14

Hello everyone! I apologize for the long mail. I am currently working on an application to use ffmpeg to create live stream a stereo input (frame packed side to side), stream over UDP, receive and display on the other end on a 3D TV. I have 2 Questions: a) I have managed to do all parts of the above in Linux (including outputing to 3D TV which took the longest) compiling ffmpeg with the required --extra-cflags and --extra-ldflags using DecklinkAPI.h. But when I tried to do a passthrough from Decklink Mini Recorder card using bmdcapture and output to Decklink 4K Extreme, I kept getting a segmentation fault till I ignored the audio using -an flag. Clearly there is a formatting setting that I am not inputting right. ====================== ffmpeg Std Output =================================== $./bmdcapture -C0 -m11 -V4 -v -F nut -f pipe:1 | ffmpeg -i - -vsync 1 -c:v rawvideo -pix_fmt uyvy422 -c:a pcm_s16le -s 1920x1080 -r 30000/1001 -ar 48000 -f decklink 'DeckLink 4K Extreme' ffmpeg version git-2014-03-11-50a3c82 Copyright (c) 2000-2014 the FFmpeg developers built on Mar 11 2014 16:20:28 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5) configuration: --prefix=/usr/local --bindir=/usr/local/bin --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfdk-aac --enable-libmp3lame --enable-decklink --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --extra-libs=-ldl --enable-gpl --enable-libass --enable-x11grab --enable-shared --prefix=/usr/local --extra-cflags=-I/home/isidvl1/Downloads/Blackmagic_DeckLink_SDK_9.7.7/Linux/include libavutil 52. 66.101 / 52. 66.101 libavcodec 55. 52.102 / 55. 52.102 libavformat 55. 34.100 / 55. 34.100 libavdevice 55. 11.100 / 55. 11.100 libavfilter 4. 3.100 / 4. 3.100 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 18.100 / 0. 18.100 libpostproc 52. 3.100 / 52. 3.100 Guessed Channel Layout for Input Stream #0.1 : stereo Input #0, nut, from 'pipe:': Metadata: encoder : Lavf55.34.100 Duration: N/A, start: 0.000000, bitrate: 1536 kb/s Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 1920x1080, 29.97 tbr, 60k tbn, 60k tbc Stream #0:1: Audio: pcm_s16le (PSD[16] / 0x10445350), 48000 Hz, stereo, s16, 1536 kb/s Output #0, decklink, to 'DeckLink 4K Extreme': Metadata: encoder : Lavf55.34.100 Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 1920x1080, q=2-31, 200 kb/s, 29.97 tbn, 29.97 tbc Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s Stream mapping: Stream #0:0 -> #0:0 (rawvideo -> rawvideo) Stream #0:1 -> #0:1 (pcm_s16le -> pcm_s16le) [decklink @ 0x224cbe0] Encoder did not produce proper pts, making some up. Segmentation fault (core dumped) ========================================================================= b) I need the same to work on windows owing to an other overlay application previously built on MSVC. I was able to cross compile modifying the cross_compile_ffmpeg.sh from https://github.com/rdp/ffmpeg-windows-build-helpers in Ubuntu 12.04 LTS. MSVC Express 2010 was used to compile the DecklinkAPI.idl to generate DecklinkAPI.h and DecklinkAPI_i.c and added them to the flags in the script. But after compilation (using Ubuntu 12.04), when I used the executables on Windows 7, I still am not able to detect the precense of the card. Are there more .idl files that need to be compiled using MIDL and added to the flags? ====================== ffmpeg Std Output =================================== C:\Project>ffmpeg -i Wildlife.wmv -f decklink -list_devices 1 dummy ffmpeg version N-61344-g8b02dfd Copyright (c) 2000-2014 the FFmpeg developers built on Mar 13 2014 11:26:52 with gcc 4.8.2 (GCC) configuration: --arch=x86_64 --target-os=mingw32 --cross-prefix=/home/isidvl1/ffmpeg-windows-build-helpers/sandbox/mingw-w64-x86_64/bin/x86_64-w64-mingw32- --pkg-config=pkg-config --enable-gpl --enable-libx264 --enable-avisynth --enable-libxvid --enable-libmp3lame --enable-version3 --enable-zlib --enable-librtmp --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libopenjpeg --enable-gnutls --enable-libgsm --enable-libfreetype --enable-libopus --disable-w32threads --enable-frei0r --enable-filter=frei0r --enable-libvo-aacenc --enable-bzlib --enable-libxavs --extra-cflags=-DPTW32_STATIC_LIB --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-libschroedinger --enable-libvpx --enable-libilbc --prefix=/home/isidvl1/ffmpeg-windows-build-helpers/sandbox/mingw-w64-x86_64/x86_64-w64-mingw32 --enable-static --disable-shared --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfdk-aac --enable-libsoxr --enable-fontconfig --enable-libass --enable-libutvideo --enable-libbluray --enable-iconv --enable-libtwolame --enable-decklink --enable-libtheora --enable-libvorbis --enable-libvpx --extra-cflags=-DLIBTWOLAME_STATIC --extra-cflags=-I/home/isidvl1/Downloads/Blackmagic_DeckLink_SDK_9.7.7/Win/cc --extra-cflags=-I/home/isidvl1/Downloads/Blackmagic_DeckLink_SDK_9.7.7/Win/include --extra-ldflags=-L/home/isidvl1/Downloads/Blackmagic_DeckLink_SDK_9.7.7/Win/cc --enable-libzvbi --enable-libcaca --enable-libmodplug --extra-libs=-lstdc++ --extra-libs=-lpng --enable-libvidstab --enable-libx264 --enable-libx265 --extra-cflags= --extra-cflags= --enable-nonfree --enable-libfdk-aac --enable-libfaac --enable-runtime-cpudetect libavutil 52. 66.101 / 52. 66.101 libavcodec 55. 52.102 / 55. 52.102 libavformat 55. 34.101 / 55. 34.101 libavdevice 55. 11.100 / 55. 11.100 libavfilter 4. 3.100 / 4. 3.100 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 18.100 / 0. 18.100 libpostproc 52. 3.100 / 52. 3.100 Guessed Channel Layout for Input Stream #0.0 : stereo Input #0, asf, from 'Wildlife.wmv': Metadata: SfOriginalFPS : 299700 WMFSDKVersion : 11.0.6001.7000 WMFSDKNeeded : 0.0.0.0000 comment : Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball title : Wildlife in HD copyright : © 2008 Microsoft Corporation IsVBR : 0 DeviceConformanceTemplate: AP@L3 Duration: 00:00:30.09, start: 0.000000, bitrate: 6977 kb/s Stream #0:0(eng): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, stereo, fltp, 192 kb/s Stream #0:1(eng): Video: vc1 (Advanced) (WVC1 / 0x31435657), yuv420p, 1280x720, 5942 kb/s, 29.97 tbr, 1k tbn, 1k tbc [decklink @ 00000000029e10a0] Blackmagic DeckLink devices: ========================================================================= Appreciate any help on this! Thank you! Anusha

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finetuning x264 encoding between superfast and veryfast
by Olivier Langlois 13 Mar '14

13 Mar '14

Hi, I need real-time h.264 encoding. With my HW, I can achieve that with superfast but with veryfast preset, the encoder isn't able to encode at a rate of 30 fps. I want to get the most of what my hardware can give by finding the exact point between these 2 presets where the encoder is still Real-Time. By being a neophyte in h.264 encoding and before testing by shooting in the dark, I'm seeking advices on which options could be added on top of veryfast preset to get the best encoding improvement for the amount of available free computation resources that I have. - superfast: --no-mbtree --me dia --no-mixed-refs --partitions i8x8,i4x4 --rc-lookahead 0 --ref 1 --subme 1 --trellis 0 --weightp 1 - veryfast: --no-mixed-refs --rc-lookahead 10 --ref 1 --subme 2 --trellis 0 --weightp 1 Here is my current cmdline: ffmpeg -f rawvideo -video_size 1920x1080 -pixel_format bgra -framerate 30 -i /dev/stdin \ -c:v libx264 -preset superfast -profile:v main -level 4.1 -pix_fmt yuv420p \ -x264opts keyint=60:bframes=2:ref=1 -maxrate 6000k -bufsize 12000k \ out.mkv thank you for the suggestions

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Re: [FFmpeg-user] libav* : configure amerge filter
by Mr Artichaut 13 Mar '14

13 Mar '14

Sorry, I miss your answer. Thank you ! In fact, it's not amerge that I need but amix, but I think it's the same in terms of configuration. I've setup my filters graph (2 abuffers, 1 amix, 1 abuffersink), I've got no error while decoding input files, writing frames in the graph, encoding them in the output file but in the end it's just noise. But it's not random noise, I can recognize the pitch of one of my sounds, so I think it's just one thing that is misconfigured. Should I configure the abuffersink with a sample rate, a channel layout etc. or is it to be done in the output context ? Should I first read each input files and then writing the buffersink in the output or should I write the output in the same time that I read the inputs ? I know it's difficult to help without the whole code and I don't want to bother you, but after looking all the examples and searching the web I didn't found any example with my configuration (multiple inputs, a complex graph and on ouput). Thank you.

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AMR Decoder
by Idan Emergy 13 Mar '14

13 Mar '14

Hi all, I'm using ffmpeg for quite some time now for encoding and decoding wav file to amr narrow band and wide band, and it works great, no complains there. my question is does ffmpeg amr decoder implementation includes the error concealment procedure (packet loss concealment) as described in amr specifications? my goal is to test audio quality under different packet loss scenarios. Many thanks. Idan Emergi.

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PGS subtitles and "forced flag"
by Oliver Fromme 13 Mar '14

13 Mar '14

Hello, Are there any usage examples for the -forced_subs_only option? I'm trying to use ffmpeg to extract PGS subtitle tracks and convert them to VOBSUB (.sub/.idx). Basically this works fine, except that I always get the whole subtitle track, i.e. both forced and non-forced subtitles, no matter if I specify "-forced_subs_only 1" or not. Am I doing something wrong, or is there a known problem with that option? I don't get any error messages, so I assume there is no usage error with my command line. Here's my command line: ffmpeg -analyzeduration 500M -probesize 500M -fix_sub_duration -forced_subs_only 1 -i 'concat:BDMV/STREAM/00000.m2ts|BDMV/STREAM/00001.m2ts|BDMV/STREAM/00002.m2ts' -vn -map 0:5 -c:s dvdsub tmp-subt5-fso.mkv Here's the output from ffmpeg: ffmpeg version 2.0 Copyright (c) 2000-2013 the FFmpeg developers built on Nov 19 2013 18:34:53 with gcc 4.2.1 (GCC) 20070831 patched [FeeBSD] configuration: --disable-x11grab --prefix=/usr/local --mandir=/usr/local/man --incdir=/usr/local/include/ffmpeg1 --libdir=/usr/local/lib/ffmpeg1 --shlibdir=/usr/local/lib/ffmpeg1 --datadir=/usr/local/share/ffmpeg1 --build-suffix=1 --progs-suffix=1 --enable-shared --enable-gpl --enable-postproc --enable-avfilter --enable-pthreads --enable-memalign-hack --disable-libstagefright-h264 --disable-libutvideo --cc=cc --extra-cflags='-msse -I/usr/local/include/vorbis -I/usr/local/include' --extra-ldflags=-L/usr/local/lib --extra-libs=-pthread --disable-debug --disable-libaacplus --disable-indev=alsa --disable-outdev=alsa --disable-libopencore-amrnb --disable-libopencore-amrwb --enable-libass --disable-libcdio --disable-libcelt --disable-libfaac --disable-libfdk-aac --enable-fontconfig --enable-libfreetype --disable-frei0r --disable-gnutls --disable-libgsm --enable-libmp3lame --enable-libbluray --disable-libv4l2 --disable-libmodplug --disable-openal --disable-libopencv --disable-lib! openjpeg --disable-libopus --disable-libpulse --enable-librtmp --disable-libschroedinger --disable-libspeex --disable-libtheora --disable-vaapi --disable-vdpau --disable-libvo-aacenc --disable-libvo-amrwbenc --enable-libvorbis --disable-libvpx --enable-libx264 --enable-libxvid --enable-nonfree libavutil 52. 53.100 / 52. 53.100 libavcodec 55. 43.101 / 55. 43.101 libavformat 55. 21.100 / 55. 21.100 libavdevice 55. 5.100 / 55. 5.100 libavfilter 3. 91.100 / 3. 91.100 libswscale 2. 5.101 / 2. 5.101 libswresample 0. 17.104 / 0. 17.104 libpostproc 52. 3.100 / 52. 3.100 [h264 @ 0x80690c120] concealing 6585 DC, 6585 AC, 6585 MV errors in I frame Input #0, mpegts, from 'concat:BDMV/STREAM/00000.m2ts|BDMV/STREAM/00001.m2ts|BDMV/STREAM/00002.m2ts': Duration: 02:14:04.04, start: 600.000000, bitrate: 8450 kb/s Program 1 Stream #0:0[0x1011]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc Stream #0:1[0x1100](ger): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 448 kb/s Stream #0:2[0x1101](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 448 kb/s Stream #0:3[0x1102](fre): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 448 kb/s Stream #0:4[0x1103](ger): Audio: dts (DTS) ([130][0][0][0] / 0x0082), 48000 Hz, 5.1(side), fltp, 1536 kb/s Stream #0:5[0x1200](ger): Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080 Stream #0:6[0x1201](eng): Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080 Stream #0:7[0x1202](fre): Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080 Stream #0:8[0x1203](nld): Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080 Stream #0:9[0x1204](tur): Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090), 1920x1080 Output #0, matroska, to 'tmp-subt5-fso.mkv': Metadata: encoder : Lavf55.21.100 Stream #0:0(ger): Subtitle: dvd_subtitle (dvdsub), 1920x1080 Stream mapping: Stream #0:5 -> #0:0 (pgssub -> dvdsub) Press [q] to stop, [?] for help [matroska @ 0x80687aa20] Encoder did not produce proper pts, making some up. size= 11819kB time=02:13:14.65 bitrate= 12.1kbits/s video:0kB audio:0kB subtitle:11750 global headers:0kB muxing overhead 0.586039% The resulting VOBSUB track inside the mkv container contains 1480 subtitles. But only 359 of them are forced. With the "-forced_subs_only 1" option, I would expect the VOBSUB track to contain only the 359 forced subtitles. In order to make sure, I extracted the PGS (.sup) track from the .m2ts files with tsMuxeR into a .sup file (ffmpeg doesn't seem to be able to do that), and then used BDSup2Sub with the /forced+ option. It correctly created an .idx file with 359 entries. On a related note, when I run BDSup2Sub without the /forced+ option, I get an .idx file with 1477 entries, as opposed to the 1480 entries from ffmpeg. So three entries are missing. I'll have to compare the lists of time stamps and then look at the movie to find out what might be happening there. Best regards Oliver --

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